Lord McAlpine is set to take legal action against Sally Bercow, Twitter users who named him and ITV's This Morning for libel, according to his lawyer.

Solicitor Andrew Reid told the BBC that ITV's This Morning was the top of a "long list" of those who could be liable to lose "a lot of money" after presenter Phillip Schofield handed prime minister David Cameron a list of alleged paedophiles live on air.

He also said Bercow, who is married to parliament's speaker, would face action after she tweeted "Why is Lord McAlpine trending? *Innocent face*"

On Thursday Bercow did not respond to requests for comment from The Huffington Post UK but, in response to reports she would be receiving a lawyer's letter from McAlpine, tweeted: "gulp".

Reid said the journalist George Monbiot, who also tweeted about McAlpine, had apologised to McAlpine twice.